All the “warming” somehow got into the deep parts of the ocean.
Any large expanse of ocean, even at the Equator, where the sun’s direct influence is most intense, grows colder with the depth, from 500 to 1,000 meters down, until the temperature reaches a steady level, approximately 38 degrees Fahrenheit or 4 degrees Centigrade It is at this point water is most dense, and sinks to the lowest points of the ocean. Upwelling from the depths brings this cold water near the surface, and has an overall COOLING effect on the greater part of the oceans, and consequently on the atmosphere that lies above the ocean surface.
There are deep currents, caused by the melting of polar ice, which is at 32 degrees Fahrenheit or 0 degrees Centigrade but it is LESS dense than the cold saline water that lies beneath it. It too is warmed to the warmer saline surface currents, but the warmer saline water is LESS dense that the less saline meltwater, which sinks BELOW the warmer saline water, causing a vertical mixing and a new dynamic for current flow.
The whole point is, that the deep parts of the ocean are NOT subject to warming, no matter what Al Gore says. Even if an underwater volcanic vent opens, and water seeps down to the magma, the water will NOT turn to steam, but is ejected under great pressure, cooling rapidly as the hot water (which may be close to 700 degrees Centigrade), but making little upset to the overall temperature of the depths. The pressure is so great the water cannot become steam, and is cooled long before it could effect much stirring at great depths.
But in a localized area of relatively shallow ocean, such as the Arctic, enough of this very hot ejected water may reach the underside of the polar ice the cause melting from beneath. This is not in fact global warming, but global COOLING, as the pressure valve is popping off. Doesn’t have a darned thing to do with humanity, and it cares not one whit about polar bears.
In case one wonders how there could be undersea vents in the Arctic Ocean, part of the Pacific “ring of fire” extends up into the undersea parts off the coast of Alaska and Siberia.